Saudi Oil Reserves May Limit
Global Role, an Expert Asserts

HOUSTON -- A prominent Houston energy analyst and investment banker is questioning whether Saudi Arabia will be able to continue playing the role of swing producer for the global oil market.

The kingdom, home to the world's largest oil reserves, has long provided a cushion of production that can quickly be called upon in times of tight oil markets. But Matt Simmons, a veteran energy expert best known for drawing early attention to...